Q3 of 9 Page 137

The resistance of a 10 cm long wire is 12 Ω. If this is folded into two parts of equal length and included in a circuit, how much will be the resistance produced?

When we cut the wire into two part, each part will have 6Ω as Resistance is directly proportional to length. When the two are connected in

1) Series Resistance will be 12Ω


2) Parallel Resistance will be 3Ω


More from this chapter

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1

Complete the table properly

 2

Given below are the diagrams showing the connection of ammeter and voltmeter in a circuit. Of these, which are correct?

 4

Of the following, which one correctly indicates Ohm’s Law?

 5

A potential difference of 6 V is applied across a conductor having 12 Ω resistance. How much current will pass through it?

How many times will the current increase if length of the resistor is halved and potential difference is doubled?