Question

A generator has an emf of $440volts$ and internal resistance of $400ohms$. Its terminals are connected to a load of $4000\Omega$. The voltage across the load is nearly

• A. $400V$
• B. $440V$
• C. $220V$
• D. $200V$

Answer 1

The correct option is A $400V$

Current , $I=\frac{E}{R+r}=\frac{440}{4000+400}=0.1A$

Voltage across $4000\Omega$, $V=IR=0.1\times 4000=400$ $V$