Question
Establish a relationship between electric current and drift velocity. Draw the direction of electron flowing in a circuit by drawing an electric circuit.
✓
Answer
SELF
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The horizontal component of earth’s magnetic field at a given place is $0.4 \times 10^{-4} Wb/m^2 $ and angle of dip is $30^\circ .$ Calculate the value of $(i)$ Vertical component $(ii)$ Total intensity of earth’s magnetic field.
→A spherical conductor of radius $12 \ cm$ has a charge of $1.6 \times 10–7C$ distributed uniformly on its surface. What is the electric field:
→- Inside the sphere
- Just outside the sphere
- At a point $18 \ cm$ from the centre of the sphere?
By what fraction does the mass of a boy increase when he starts running at a speed of 12km/h?
A ceiling fan has a diameter (of the circle through the outer edges of the three blades) of 120cm and rpm 1500 at full speed. Consider a particle of mass 1g sticking at the outer end of a blade. How much force does it experience when the fan runs at full speed? Who exerts this force on the particle? How much force does the particle exert on the blade along its surface?
Define electric flux. Write its SI unit.
Using Gauss’s law, deduce an expression for electric field intensity due to an infinitely long straight uniformly charged wire.
Using Gauss’s law, deduce an expression for electric field intensity due to an infinitely long straight uniformly charged wire.
Define an equipotential surface. Draw equipotential surface:
- In the case of a single point charge and,
- In a constant electric field in Z-direction.
- Can electric field exist tangential to an equipotential surface? Give reason.
A simple pendulum consists of a 50cm long string connected to a 100g ball. The ball is pulled aside so that the string makes an angle of 37° with the vertical and is then released. Find the tension in the string when the bob is at its lowest position.
If the operating potential in an X-ray tube is increased by 1%, by what percentage does the cutoff wavelength decrease?
Two identical parallel plate capacitors A and B are connected to a battery of V volts with the switch S closed. The switch is now opened and the free space between the plates of the capacitors is filled with a dielectric of dielectric constant K. Find the ratio of the total electrostatic energy stored in both capacitors before and after the introduction of the dielectric.
Consider a uniform electric field E =
3 × 103 $\hat{ i }$ N/C.
(a) What is the flux of this field through a square of 10 cm on a side whose plane is parallel to the yz plane?
(b) What is the flux through the same square if the normal to its plane makes of 60° angle with the x-axis?
→3 × 103 $\hat{ i }$ N/C.
(a) What is the flux of this field through a square of 10 cm on a side whose plane is parallel to the yz plane?
(b) What is the flux through the same square if the normal to its plane makes of 60° angle with the x-axis?