Home
Class 12
PHYSICS
An a.c voltage of 300V applied to the pr...

An a.c voltage of 300V applied to the primary of a transformer `&` voltage of 3000V is obtained from the secondary coil. Calculate the ratio of circuit in the primary `&` secondary coils.

Text Solution

Verified by Experts

Given : Primary voltage `E_(1)=300V`
Secondary voltage `E_(2)=3000V`
To find :
Primary current `I_(1)=?`
Secondary current `I_(2)=?`
Solution :
`(I_(1))/(I_(2))=(E_(2))/(E_(1))=(3000)/(300)=10:1`
Promotional Banner

Similar Questions

Explore conceptually related problems

A transformer has an efficiency of 80% and works at 100 V and 4 kW. The secondary voltage is 240 V. Calculate the current in the primary and secondary.

The primary coil of a transformer has 800 turns and the secondary coil has 8 turns. I connected to a 220 V as supply. What will be the output voltage?

In a transformer primary has 50 turns and secondary has 10 turns . The RMS voltage in the primary is 120V . Find the RMS secondary voltage in the open circuit .if the secondary has a load of 12 Omega . What are the currents in the primary and secondary ?

When a voltage of 120V is impressed across the primary of a transformer , the current in the primary is 1.85mA . Find the voltage across the secondary , when it delivers 150mA . The transformer has an efficiency of 95%

In step-up transformer the output voltage is 11 kV and the input voltage is 220 V. The ratio of number of turns of secondary to primary is:

The 300 turn primary of a transformer has resistnace 0.82Omega and the resistance of its secondary of 1200 turns is 6.2Omega . Find the voltage across the primary if the power output from the secondary at 1600 V is 32 kW. Calculate the power losses in both coils when the transformer efficiency is 80% .

A step down transformer convert a voltage of 2200 V into 220V in the transmission line. Number of turns in the primary coil is 5000. Efficiency of transformer is 90% and its output power is 8kW. Calculate (i) the number of turns in the secondary coil, (ii) input power.

If voltage applied on a capacitor is increased from V to 2V: