If voltage and current are known , what is the formula for finding power ?

A transformer without power loss carries 4000 turns in the primary and 2000 turns in thw secondary. If the primary voltage is 120 V and the current is 0.2 A . What is the current in the secondary ?

A transistor in the common emitter mode can be used as an amplifier. Derive expressions for voltage gain, current gain and power gain in the above transistor configuration

A transformer without power loss carries 4000 turns in the primary and 2000 turns in thw secondary. If the primary voltage is 120 V and the current is 0.2 A . What is the output voltage of transformer ?

A transformer without power loss carries 4000 turns in the primary and 2000 turns in thw secondary. If the primary voltage is 120 V and the current is 0.2 A . What is the maximum output power ?

For a transformer relation between primary to secondary voltage and numbe of turn is Ns// Np=Vs//Vp :-What is the voltage and current relationship between primary and sec¬ondary turns of a transformer?

In a trasnsformer, if the voltage of the primary is V_p and the current in the primary id I_p voltage in the secondary is Vs and the current Is ,write down the formulae conecting them.

There are 10000 turns in a trànsformer. Voltage in the primary is 0.2A. The transformer is wound so as to get a current 0.4A in the secondary. What is the maximum output power that received from this transformer?

What happens to terminal voltage if current increases (1) for an ideal cell (ii) for an ordinary cell.