An iron cored coil is connected in series with an electric bulb with an AC source as…
Physics · Class 12 · CBSE — Alternating Current
An iron cored coil is connected in series with an electric bulb with an AC source as shown in figure. When iron piece is taken out of the coil, the brightness of the bulb will
- decrease
- fluctuate
- remain unaffected
- increase
Answer
(D) increase
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- An electrical device draws 2 kW power from ac mains voltage 223 V(rms). The current differs lags in phase by…
- The primary and secondary coils of a transformer have 500 turns and 5000 turns respectively. The primary coil…
- In the question number 31, the number of turns in the secondary is
- The output of a step-down transformer is measured to be 24 V when connected to a 12 watt light bulb. The…
- A circuit is made up of a resistance 1 Ω and inductance 0.01 H. An alternating voltage of 200 V at 50 Hz is…
- A fully charged capacitor C with initial charge Q 0 is connected to a coil of self inductance L at t = 0. The…
- The voltage over a cycle varies as The average value of the voltage for one cycle is
- In an ac circuit, V and I are given by V = 150sin(150 t ) volt and I = 150sin ampere. The power dissipated in…
More Alternating Current questions · Browse all practice questions