Question

if two resistors of resistance 5watt and 10watt are connected to a battery of potential difference 6V then determine the value of current when they are consumed in a. series b. parallel ​

Answer 1

Required Answer:-

The resistors are 5 ohms and 10 ohms.

Potential difference = 6 V

Equivalent resistance:

= R1 + R2

= 5 ohms + 10 ohms

= 15 ohms

Now by using ohm's law, Finding the current flowing through the wire:

⇒ V = IR

⇒ 6V = I × 15 ohms

⇒ I = 0.4 ohms (♔)

In Parallel:

The resistors are 5 ohms and 10 ohms.

Potential difference = 6 V

Equivalent resistance:

= R1.R2 / R1 + R2

= 5 ohms × 10 ohms / 5 ohms + 10 ohms

= 10/3 ohms

Now by using ohm's law, Finding the current flowing through the wire::

⇒ V = IR

⇒ 6V = I × 10/3 ohms

⇒ I = 1.8 ohms