Question

An ideal transformer converts 170 V a.c. to 1.70 KV a.c. to transmit a power of 3.4 KW. If primary coil has 500 turns then alternating current in secondary coil is ______.

पर्याय

• 2.5 A

• 1.5 A

• 1 A

• 2 A

Answer 1

An ideal transformer converts 170 V a.c. to 1.70 KV a.c. to transmit a power of 3.4 KW. If primary coil has 500 turns then alternating current in secondary coil is 2 A.

Explanation:

Given: \[\mathrm{V_{P}~=~170~V,~V_{S}~=~1.70\times~10^{3}~V}\], \[N_P=500,P=3.4\times10^3W\]

Power, \[\mathrm{P}=\mathrm{V}_{\mathrm{S}}\mathrm{I}_{\mathrm{S}}\]

\[\therefore\quad\mathrm{I_{S}=\frac{P}{V_{s}}=\frac{3.4\times10^{3}}{1.70\times10^{3}}=2A}\]