MDCAT Physics Chapter 7 Current Electricity Online Test

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  • Chapter NameCurrent Electricity
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MDCAT Physics Chapter 7 Current Electricity Online Test

  • Total Questions20

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MDCAT Physics Chapter 7 Current Electricity Online Test

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Question # 1

The β€˜emf ’ is always even when no current is drawn through the battery of the cell:

Question # 2

The specific resistance of a wire varies with its:

Question # 3

If a source of emf is traversed from positive to negative the potential change will be:

Question # 4

Which combination of 7 identical resistors of 3-ohm will give 12/13 ohm:

Question # 5

The product of resistance and conductance of a resistors is equal to:

Question # 6

The rate at which the battery is supplying the electrical energy is the:

Question # 7

Two wires of same material have lengths L and 2L and cross-sectional area 4A and A respectively. the ratio of their specific resistance would be:

Question # 8

There are two electric bulbs of 40 W and 100 W. They are first connected in series and then in parallel across a source:

Question # 9

A 100W, 220V bulb is operated on a 110V line, the power consumed is:

Question # 10

A total charge of 100C flows through 12W bulb in a time of 50 second. Which is the potential difference across the bulb during this time?

Question # 11

A piece of Aluminium (Al) and a piece of Germanium (Ge) are cooled T1 K to T2 K. The resistance of:

Question # 12

A cell of negligible resistance and e.m.f 2 V is connected across a series combination of 2,3 and 5 ohms. The p.d. across the 3 Ξ© resistor is

Question # 13

Which of the Following bulb will glow Brightest?

Question # 14

Resistance of 60 watt bulbs in 120V line is:

Question # 15

Electric current is defined as:

Question # 16

When the length and area of cross-section both are doubled, then its resistance:

Question # 17

The emf of a cell of negligible internal resistance is 2V. It is connected to the series combination of πŸπ›€, πŸ‘π›€ 𝐚𝐧𝐝 πŸ“π›€ resistance. The potential difference across πŸ‘π›€ resistance will be in volt:

Question # 18

An electric room radiator, which operates at 50V has resistance of 50 Ξ©. Power of the radiator is approximately:

Question # 19

A charge is 90C passes through a wire in 1 hour and 15 minutes. Wat is the current in the wire?

Question # 20

A steady current is flowing in a conductor of non-uniform cross-section. Thecharge passing through any cross-section per unit time is

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