Question

three resistors 10ohm,20ohm and30ohm are connected in series combination ?2]when this series combination is connected to 12V supply,by neglecting the value of internal resistance ,obtain potential difference across each resistor ​

Answer 1

Answer:

Potential difference across

10 ohm = 2V

20 ohm = 4V

30 ohm = 6V

Explanation:

Since the resistors are connected series , equivalent resistance R(tot) is equal to sum of the individual resistance of the resistors.

i.e. R(tot) = 10 + 20 + 30

R(tot) = 60 ohm.

Current in the circuit = V/R(tot)

I = 12/60

I = 0.2A

Potential difference across a resistor = IR

Where R is resistance of each resistor.

Potential difference across 10ohm resistor = 0.2*10 = 2V

Potential difference across 20ohm resistor = 0.2*20 = 4V

Potential difference across 30ohm resistor = 0.2*30 = 6V.

Hope it helps !