Q. 1

# Draw the method of connecting four resistors of 2 Ω each to get .

Answer :

No possible Method

Since we have 4 resistors of 2Ω each; so maximum resistance that we can get is 8Ω and minimum is 2Ω. So, our first thought would be that we can solve the above problem.

And we try 1 resistor in series with other 3 in parallel and we don’t get the above-given resistance. On trying other possible combination, we don’t get; hence the above problem is not correct and there is no a possible method.

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Complete the table properly

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

Kerala Board Physics Part II

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?

Kerala Board Physics Part IIThe 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?

Kerala Board Physics Part IIDraw the method of connecting four resistors of 2 Ω each to get .

Kerala Board Physics Part IIWhat mode of connection of three resistors of 3 Ω each will produce minimum resistance? What will produce maximum resistance? Draw the diagram and calculate the effective resistance.

Kerala Board Physics Part IIThe figure shows a conductor of resistance 8 Ω connected in a circuit in the circular shape.

Of these, which gives minimum resistance? Justify your answer.

Kerala Board Physics Part IIOf the following, which one correctly indicates Ohm’s Law?

Kerala Board Physics Part II