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JEE 2020 Physics: Kirchhoff's Rules Quiz

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Question 1

In the box shown current i enters at H and leaves at C.

choose the branch in which current is zero

Question 2

The resistance of the series combination of two resistances is S. When they are joined in parallel total resistance is P. If S = nP, then the minimum possible value of n is

Question 3

The Kirchhoff’s first law (∑ i = 0) and second law (∑iR = ∑ E), where the symbols have their usual meanings, are respectively based on

Question 4

A 5V battery with internal resistance 2Ω and a 2 V battery with internal resistance 1Ω are connected to a 10Ω resistor as shown in the figure.

The current in the 10Ω resistor is

Question 5

In the circuit shown, the current in the 1Ω resistor is:

Question 6

A 3 volt battery with negligible internal resistance is connected in a circuit as shown in the figure. The current I, in the circuit will be

Question 7

In the above circuit the current in each resistance is:

Question 8

An electric current is passed through a circuit containing two wires of the same material, connected in parallel. If the length and radii of the wires are in the ratio of 4/3 and 2/3, then the ratio of the currents passing through the wire will be

Question 9

A resistor has a colour code of green, blue, brown and silver. What is its resistance?

Question 10

A rod of a certain metal is 1.0 m long and 0.6 cm in diameter. Its resistance is 3.0x10^-3

. Another disc made of the same metal is 2.0 cm in diameter and 1.0 m thick. What is the resistance between the round faces of the disc ?

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Jul 12JEE & BITSAT