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If two bulbs of power 60 W and 100 W respectively each rated 110 V are connected in series with the supply of 220 V, then

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Important Questions on Current Electricity

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Gamma Question Bank for Medical Physics>Chapter 18 - Current Electricity>EXERCISE>Q 14
Two electric bulbs whose resistances are in the ratio 1: 2 are connected in series to a constant voltage source. The power dissipated in them are in the ratio
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Gamma Question Bank for Medical Physics>Chapter 18 - Current Electricity>EXERCISE>Q 15
Fuse wire should have
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Gamma Question Bank for Medical Physics>Chapter 18 - Current Electricity>EXERCISE>Q 16
Kilowatt-hour is the unit of?
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Gamma Question Bank for Medical Physics>Chapter 18 - Current Electricity>EXERCISE>Q 17
Two electric bulbs A and B rated 200 V~100 W and 200 V~60 W are connected in series to a 200 V line. Then the potential drop across
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Gamma Question Bank for Medical Physics>Chapter 18 - Current Electricity>EXERCISE>Q 18
A heater coil connected across a given potential difference has power P. Now, the coil is cut into two equal halves and joined in parallel. Across the same potential difference, this combination has power:
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Gamma Question Bank for Medical Physics>Chapter 18 - Current Electricity>EXERCISE>Q 19
A current i passes through a metal wire of length l, radius of cross-section r and conductivity σ. The rate of heat generation is
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Gamma Question Bank for Medical Physics>Chapter 18 - Current Electricity>EXERCISE>Q 20
An electric bulb marked 25 W and 100 V is connected across 50 V supply. Now its power is
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Gamma Question Bank for Medical Physics>Chapter 18 - Current Electricity>EXERCISE>Q 21

The equivalent resistance between A and B in the situation shown is

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