Heating and Chemical Effect of Current Physics Test Series For NEET-2020

Test Preparation on Heating and Chemical Effect of Current-Physics Test Series For NEET 2020

1.

A 12 HP motor has to be operated 8 h/day. How much will
it cost at the rate of 50 paise/kWh in 10 days
(a) Rs 347 (b) Rs 358
(c) Rs 375 (d) Rs 397

1A
2B
3C
4D

2.

Two electric bulbs, one of 200 volt 40 watt and the other
200 volt 100 watt are connected in a house wiring circuit

1They have equal currents through them
2The resistance of the filaments in both the bulbs is same
3The resistance of the filament in 40 watt bulb is more than the resistance in 100 watt bulb
4The resistance of the filament in 100 watt bulb is more than the resistance in 40 watt bulb

3.

The material of fuse wire should have

1A high specific resistance and high melting point
2A low specific resistance and low melting point
3A high specific resistance and low melting point
4A low specific resistance and a high melting point

4.

A heater coil is cut into two parts of equal length and one of
them is used in the heater. The ratio of the heat produced
by this half coil to that by the original coil is

12 : 1
21 : 2
31 : 4
44 : 1

5.

1A
2B
3C
4D

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