Calculate the resistance of a wire, if the voltage is $48 V$ and the current flowing is equal to $4 A$ .
12

Open in App

Solution

The correct option is A 12
From Ohm's law, the relation between electric current, $I$ , voltage, $V$ and resistance, $R$ is given by $V = I R$

Given $I = 4 A$ and $V = 48 V$ .
$∴ R$ = $\frac{48}{4} = 12 Ω$

Suggest Corrections

Similar questions

If 240V voltage is applied to an electric heater , 2 A curcurr passes through it. Find the current flowing in the heater if 120V voltage is applied to it and also calculate the resistance of the coil of heater.

Q. Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If the percentage errors in the measurement of the current and the voltage difference are

3

% each, then error in the value of resistance of the wire is

Q. A battery of electromotive force

12 V

and internal resistance

2 Ω

is connected to a resistor. If the current of

0.5 A

is flowing through the circuit then calculate the resistance of resistor. If the circuit is closed then what will be terminal voltage of the cell?

Q. Calculate the unknown resistance R of the circuit as shown in figure, all resistance are connected in the series. The current is flowing through circuit is 2A and battery is of 20 voltage.

Calculate the current flowing through a wire of resistance 5 $Ω$ connected to a battery of potential difference 3 V.

Join BYJU'S Learning Program

Calculate the resistance of a wire, if the voltage is 48 V and the current flowing is equal to 4 A.12

The correct option is A 12From Ohm's law, the relation between electric current, I, voltage, V and resistance, R is given by V=IR Given I=4 A and V=48 V. ∴R = 484=12 Ω

Calculate the resistance of a wire, if the voltage is $48 V$ and the current flowing is equal to $4 A$ .
12

The correct option is A 12
From Ohm's law, the relation between electric current, $I$ , voltage, $V$ and resistance, $R$ is given by $V = I R$

Given $I = 4 A$ and $V = 48 V$ .
$∴ R$ = $\frac{48}{4} = 12 Ω$