Question

1. How many bulbs each of the resistance 12 should be connected in parallel to draw a current of 2A from a battery of 6V​

Answer 1

Given Question :-

• How many bulbs each of the resistance 12 should be connected in parallel to draw a current of 2A from a battery of 6V .

To Find:-

• The number of bulbs .

Solution :-

We know that of n indentical resistances of value R are Connected in parallel then net resistance is given by , R/n . Now here ,

• Current = 2A
• Potential difference = 6V .
• Resistance = 12Ω

On using formula ,

$\boxed{\boxed{\red{\sf Voltage = (Current)(Resistance) }}}$

⇒ V = I R

⇒ 6 V = 2A * 12/ n

⇒ 6V = 24A/n

⇒ n = 24 * 6

⇒ n = 144

Hence the number of resistances to be connected is 144 .

$\Large\boxed{\pink{\sf \red{\bigstar}\:n(Resistances)=144}}$