The device used for producing current is called _____________.
- AA voltmeter
- BAn ammeter
- CA galvanometer
- ✓A generator
Answer: D.
View full solution →Question types
P-1 Effects of electric current question types
34 questions across 12 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
34
Questions
12
Question groups
5
Question types
01
M.C.Q
4 Q→02Answer the following questions:[1 M]
1 Q→03Give scientific reasons: [2 M]
1 Q→04Answer the following questions: [2 M]
4 Q→05Answer the following questions: [3 M]
6 Q→06Answer the following questions: [5 M]
3 Q→07Write True or False
2 Q→08Name the Following
1 Q→09Do As Directed.
8 Q→10Find An Odd One Out
2 Q→11Distinguish Between :
1 Q→12Find the correlation.
1 Q→Sample Questions
P-1 Effects of electric current questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Observe the following diagram and choose the correct alternative:
- AThe intensity of magnetic field in A is larger than in B.
- BThe intensity of magnetic field in B is less than in A.
- CThe intensity of magnetic field in A and B is same.
- ✓The intensity of magnetic field in A is less than in B.
Answer: D.
View full solution →When electric current is passed through the solenoid, it shows magnetic lines of force similar to a ____________.
- ✓bar magnet
- Bhorse shoe magnet
- Cdisk magnet
- Dspherical magnet.
Answer: A.
View full solution →____________ is used to make a solenoid type coil in an electric bulb.
- ANichrome
- BCopper
- ✓Tungsten
- DAluminium
Answer: C.
View full solution →Identify the law from the given tigure :
For electric power transmission, copper or aluminium wire is used.
Identify the figure and explain its use:
Observe the given figure of Fleming's Left Hand Rule and write the labels of 'A' and 'B':
Observe the given figure of Fleming's Right Hand Rule and write the labels of A and B correctly.
Two tungsten bulbs of power $50 W$ and $60 W$ work on $220 V$ potential difference. If they are connected in parallel, how much current will flow in the main conductor?
View full solution →What is a solenoid? Draw a neat diagram and name its various components.
Identify figures A, B, C and give their uses:
Read the given passage and answer the following questions:
The home electrical connection consists of 'live', 'neutral' and 'earth' wires. The 'live' and the 'neutral' wires have potential difference of 220 V . The 'earth' is connected to ground. Due to a fault in the equipment or if the plastic coating on the 'live' and the 'neutral' wires gives a way the two wires come in contact with each other and a large current flows through it producing heat. If any inflammable material (such as wood, cloth, plastic, etc.) exists around that place it can catch fire. Therefore a fuse wire is used as a precautionary measure.
i. Name the two wires having potential difference of 220 V .
ii. What is short circuit?
iii. Write the function of a fuse.
The home electrical connection consists of 'live', 'neutral' and 'earth' wires. The 'live' and the 'neutral' wires have potential difference of 220 V . The 'earth' is connected to ground. Due to a fault in the equipment or if the plastic coating on the 'live' and the 'neutral' wires gives a way the two wires come in contact with each other and a large current flows through it producing heat. If any inflammable material (such as wood, cloth, plastic, etc.) exists around that place it can catch fire. Therefore a fuse wire is used as a precautionary measure.
i. Name the two wires having potential difference of 220 V .
ii. What is short circuit?
iii. Write the function of a fuse.
What is Electrical Power? Derive the unit of electric power from the given equations:
Observe the following diagram and answer the questions glven below :
I. Identify the device shown in the figure.
II. On which rule is the working of the above device based?
iii. Give any two uses of this device.
I. Identify the device shown in the figure.
II. On which rule is the working of the above device based?
iii. Give any two uses of this device.
Observe the following diagram and answer the questions given below:
i. Identify the above diagram.
ii. Write the principle on which the above appliance works.
iii. write the working of the above appliance.
iv. Write the use of the above appliance.
i. Identify the above diagram.
ii. Write the principle on which the above appliance works.
iii. write the working of the above appliance.
iv. Write the use of the above appliance.
Observe the following diagram and write the answers of the given sub-questions:
i. Which instrument the above figure shows?
ii. Which rule is used to determine the direction of the current produced?
iii. State the rule.
iv. In which direction ( $B_1$ to $B_2$ or $B_2$ to $B_1$ ) will the current flow in the external circuit in that situation?
v. What change will have to be made in the coil for increasing the current several times without changing the magnet?
View full solution →i. Which instrument the above figure shows?
ii. Which rule is used to determine the direction of the current produced?
iii. State the rule.
iv. In which direction ( $B_1$ to $B_2$ or $B_2$ to $B_1$ ) will the current flow in the external circuit in that situation?
v. What change will have to be made in the coil for increasing the current several times without changing the magnet?
Observe the diagrams and answer the questions:
i. Which effect of electric current is shown in the above figure?
ii. What will happen if the number of electric cells is increased on the magnetic needle?
iii. If the distance between the conductor and magnetic needle is increased, what will be the effect on intensity of magnetic field?
iv. If the ends of electric cell are interchanged, what will be the effect of the magnetle needle?
v. Write the names of any two instruments which work on magnetic effect of electric current,
i. Which effect of electric current is shown in the above figure?
ii. What will happen if the number of electric cells is increased on the magnetic needle?
iii. If the distance between the conductor and magnetic needle is increased, what will be the effect on intensity of magnetic field?
iv. If the ends of electric cell are interchanged, what will be the effect of the magnetle needle?
v. Write the names of any two instruments which work on magnetic effect of electric current,
An electric motor converts mechanical energy into electrical energy.
The frequency of AC is 50 Hz.
Give the unit of intensity of magnetic field.
Find An Odd One Out :
Loudspeaker, Microphone, Electric motor, Magnet
Loudspeaker, Microphone, Electric motor, Magnet
True or False :
An electric motor converts mechanical energy into electrical energy.
An electric motor converts mechanical energy into electrical energy.
Find An Odd One Out :
Voltmeter, ammeter, galvanometer, thermometer
Voltmeter, ammeter, galvanometer, thermometer
True or False :
The frequency of AC is 50 Hz.
The frequency of AC is 50 Hz.
Loudspeaker, Microphone, Electric motor, Magnet
Voltmeter, ammeter, galvanometer, thermometer
Distinguish between 'alternating current' and 'direct current'.
Resistance: Ohm:: Potential difference: __________.
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