Question

A generator has an e.m.f. of 440 Volt and internal resistance of 4000 hm. Its terminals are connected to a load of 4000 ohm. The voltage across the load is(a) 220 volt(b) 440 volt(c) 200 volt(d) 400 volt

Answer 1

A generator has an e.m.f. of 440 Volt and internal resistance of 4000 hm. Its terminals are connected to a load of 4000 ohm. The voltage across the load is(a) 220 volt(b) 440 volt(c) 200 volt(d) 400 volt

E = EMF = 440 V

Ri  = Internal Resistance = 4000 Ω

Re = Load = External Resistance = 4000 Ω

I = E/(Ri + Re)

I = 440 / (4000 + 4000)

I = 440/8000 A

Voltage across load Re = I * Re

= (440/8000) * 4000

= 440/2

= 220  V

The voltage across the load  = 220 V

Option A is correct

Answer 2

Answer:

a) 220 V

Explanation:

EMF of the generator = EMF = E = 440 V (Given)

Internal Resistance = RI = 4000 Ω (Given)

External Resistance = RE = 4000 Ω (Given)

Following the equation of resistance -

I = E/(Ri + Re)

I = 440 / (4000 + 4000)

I = 440/8000 A

Voltage across load Re = I × Re

= (440/8000) × 4000

= 440/2

= 220  V

Therefore, the voltage across the load  is 220 volts.