Question

when a device is used in a circuit in which the voltage is 81 V, the current flowing through the device is 3a. what is the resistance of the device?

Answer 1

The answer would be 27 resistance because all you've got to do is divide the amount of voltage by the current to overall get the resistence. And so 81 divided by 3 is 27.

81/3
Divide
Final Answer: 27

Answer 2

Answer

The resistance of the circuit is 27 ohms .

Explanation :

The relationship between the current , voltage and resistance is given by .

$I= \frac{V}{R}$

Where I is current , V is voltage and R is resistance .

As given

The voltage is 81 V, the current flowing through the device is 3A.

Putting the values

$3 = \frac{81}{R}$

$R = \frac{81}{3}$

R = 27 ohms

Therefore the resistance of the circuit is 27 ohms .