Quiz 15 – APS Physics

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Passing percentage = 60%

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Electricity

1 / 10

What is wrong in the circuit arrangement ?

ammeter is connected in parallel and voltmeter is connected in series

the key should be placed on the positive terminal of the battery

The circuit is not switched 'ON'

a variable resistance should not be connected in the circuit

2 / 10

An electric bulb is rated 100 W, 200 V. When it is operated at 100 V, the power dissipated by the bulb will be

50 W

200 W

25 W

100 W

3 / 10

The effective resistance of the circuit shown here is

4 Ω

12 Ω

8 Ω

20 Ω

4 / 10

Aaditya has a large number of coloured electric bulbs having a rating of 220 V, 20 W each. How many such bulbs can he connect in parallel with one another across the 220 V source supply line so that only a current of 5 A is drawn from the mains ?

100

5 / 10

Two electric bulbs, one of 220 V, 40 W rating and the other of 220 V, 60 W rating are connected in a domestic circuit. What is correct statement about these ?

the resistance of the 40 W bulb is more than the resistance of 60 W bulb

they have equal current in them

both the bulbs have the same resistance

both the bulbs will consume the same power

6 / 10

Connecting wires in a household domestic circuit should have

low resistivity and large area of cross-section

low resistivity and small area of cross-section

high resistivity and small area of cross-section

high resistivity and large area of cross-section

7 / 10

How can three resistance of 2 Ω, 3 Ω and 6 Ω be connected so as to give a total resistance of 1Ω ?

connect 6 Ω and 3 Ω in series and 2Ω in parallel

connect all the three resistors in series

connect 6 Ω and 3 Ω in parallel and 2Ω in series

connect all the three resistors in parallel

8 / 10

A wire of resistance 10 Ω is bent in the form of a closed circle. What is the effective resistance between the two points at ends of any diameter of the circle?

2.5 Ω

10 Ω

5 Ω

1 Ω

9 / 10

The resistance of a conductor is 1 Ω. The meaning of this statement is :

It will produce a lot of heat

A current of 1 A flows through the conductor if potential difference across the ends of conductor is 1 V.

The resistance of the conductor is very low.

1 J of work is done when a resistance is 1Ω

10 / 10

A wire is drawn such that its radius changes from r to 2r. The new resistance will become

4 times

2 times

\(frac{1}{16}\)

\(frac{1}{4}\)

The average score is 15%

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