JEE Mains Current Electricity

Test Preparation on JEE Mains Current Electricity Paper (I)-2018

1.

If an ammeter is to be used in place of a voltmeter, then
we must connect with the ammeter a [2002]

1low resistance in parallel
2high resistance in parallel
3high resistance in series
4low resistance in series.

2.

A wire when connected to 220 V mains supply has power dissipation P1. Now the wire is cut into two equal pieces which are connected in parallel to the same supply. Power dissipation in this case is P2. Then P2: P1 is [2002]

11
24
32
43

3.

If a current is passed through a spring then the spring
will-

1expand
2compress
3remains same
4none of these.

4.

12 ohm
26 ohm
35 ohm
44 ohm

5.

The mass of product liberated on anode in an electrochemical cell depends on [2002]

1
(It)^1/2
2
It
3
I/t
4
I2t

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