Question

If current incresed by 100 % then power is equlas

Answer 1

Explanation:

Relation between power and current is given as:

P = VI...... (1)

Now, when current is increased by 100%. Let the power generated be $P_1.$

$\therefore P_1= V(I + 100\%\:of \:I)\\</p><p>\therefore P_1= V(I + \frac {100}{100}</p><p>\times I)\\</p><p>\therefore P_1= V(I + 1</p><p>\times I)\\ </p><p>\therefore P_1= V(I + I)\\</p><p>\therefore P_1= V(2I)\\</p><p>\therefore P_1= 2(VI) .....(2)\\From \:equations \:(1) \:\&\:(2) \\</p><p>\huge \boxed {P_1= 2P}$

Thus, If current is incresed by 100 % then power generated will be twice of earlier one.

Answer 2

Answer:

When a current I is flowing through a resistor of resistance R , the power dissipated across it can be calculated as P=I2R . Hence, on increasing the current by 100% , the power dissipated across the resistor increases by 300% which corresponds to (C). Hence, the correct option is option (C).