Consider the circuit given below where A, B and C are three identical light bulbs of constant resistance.
- List the bulbs in order of increasing brightness.
- If C burns out, what will be the brightness of A now compared with before?
- If B burns out instead, what will be the brightness of A and C compared with before?
Download our app for free and get started
- C will be the brightest. Voltage will be distributed equally between A and B, so they will have equal brightness but lesser than that of C.
- A gets the same voltage as before, so its brightness remains the same.
- If B burns put, A will also stop glowing because it is connected in series with B. However, brightness of C remains the same.
Download our appand get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
Similar Questions
- 1Calculate the power used in the $2Ω$ resistor in each of the following circuits:View Solution
- A $6V$ battery in series with $1Ω$ and $2Ω$ resistors.
- A $4V$ battery in parallel with $12Ω$ and $2Ω$ resistors.
- 2View SolutionAn electric bulb is rated as 10W, 220V. How many of these bulbs can be connected in parallel across the two wires of 220V supply line if the maximum current which can be drawn is 5A?
- 3View SolutionState and explain Joule’s law of heating.
- 4View SolutionState three factors on which the heat produced by an electric current depends. How does it depend on these factors?
- 5Calculate the resistance of an aluminium cable of length $10\ km$ and diameter $2.0\ mm$ if the resistivity of aluminium is $2.7\times10 Ω\ \text{m}.$View Solution
- 6Calculate the resistance of a copper wire 1.0km long and 0.50mm diameter if the resistivity of copper is $1.7\times10\Omega\ \text{m}.$View Solution
- 7The resistors $R_1 , R_2 , R_3$ and $R_4$ in the figure given below are all equal in value.View Solution
What would you expect the voltmeters $A, B$ and $C$ to read assuming that the connecting wires in the circuit have negligible resistance? - 8What is, highest, and lowest, resistance which can be obtained by combining Com resistors having the following resistances?View Solution
$4 Ω, 8 Ω, 12 Ω, 24 Ω$ - 9View SolutionWhat is a circuit diagram? Draw the labelled diagram of an electric circuit comprising of a cell, a resistor, an ammeter, a voltmeter and a closed switch (or closed plug key). Which of the two has a large resistance: an ammeter or a voltmeter?
- 10View SolutionTwo exactly similar electric lamps are arranged (i) in parallel, and (ii) in series. If the parallel and series combination of lamps are connected to 220V supply line one by one, what will be the ratio of electric power consumed by them?