Question

Circuits

The power P dissipated in a resistor of restistance R is measured for a range of values of the potential difference V across it. The results are shown in the table below.

i) Complete the table above.

Answer 1

Answer:

5.1 and 7.1

Explanation:

I don't really know how it works but the numbers in the first column are squared which gives the numbers in the second column. (e.g. 2.25x2.25=5.1)

Answer 2

The results which are blank in the table are 5.1 and 7.1.

What is power of the circuit?

The power of the bulb or any resistor is equal to the product of voltage and current flowing through it.

P = VI = I²R

The power P dissipated in a resistor of resistance R is measured for a range of values of the potential difference V across it.

The results are shown in the table below.

The first column is squared to obtain the value on the second column.

Square of 2.25 = 5.0625 ≈ 5.1

Square of 2.67 = 7.1289 ≈ 7.1

Thus, the results which are blank in the table are 5.1 and 7.1.

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