Question

A circuit has an overall resistance of 40 ohms and a current of 200mA.

What is the potential difference in this circuit? ​

Answer 1

To find the potential difference in the circuit, we can use Ohm's Law. In this case, the current is 200mA and the resistance is 40 ohms. Therefore, the potential difference in this circuit is 8 volts.

Step-by-step explanation:

To find the potential difference in the circuit, we can use Ohm's Law, which states that the potential difference (V) is equal to the current (I) multiplied by the resistance (R). In this case, the current is 200mA, which is equivalent to 0.2A, and the resistance is 40 ohms. Therefore, the potential difference can be calculated as follows:

V = I * R
V = 0.2A * 40 ohms
V = 8 volts

So, the potential difference in this circuit is 8 volts.

Answer 2

Hey!

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Voltage (V) = 0.8V

Current (I) = 200 mA = 200/10^3 = 2/10

Resistance = ?

Resistance = Voltage / Current

Voltage = Current × Resistance

0.8 = 2/10 × Resistance

0.8×10/2 = Resistance

8/2 = Resistance

Resistance = 4 ohm

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Hope it helps...!!!

Step-by-step explanation: