Advertisements
Advertisements
Question
Tick (✓) the correct choice among the following :
There are 500 turns and 2000 turns in the primary and secondary coil of a
transformer respectively. If th e output voltage is 1000 V, how large is the
input voltage?
Options
250 v
500 v
1000 v
2000 V
4000 V
Advertisements
Solution
250 v
APPEARS IN
RELATED QUESTIONS
What actually travels through the wires when you switch on a light?
How do you think the brightness of two lamps arranged in parallel compares with the brightness of two lamps arranged in series (both arrangements having one cell)?
What is the purpose of a fuse in an electrical circuit?
An electric bulb is rated 250 W, 230 V.
- the energy consumed in one hour, and
- the time in which the bulb will consume 1.0 kWh energy when connected to 230 V mains.
A geyser is rated 1500 W, 250 V. This geyser is connected to 250 V mains. Calculate:
- The current drawn,
- The energy consumed in 50 hours, and
- The cost of energy consumed at ₹ 4.20 per kWh.
State the condition when it is advantageous to connect cells in series.
- What is meant by electric current?
- Name and define its unit.
- Which instrument is used to measure the electric current? How should it be connected in a circuit?
Conventionally, the direction of the current is taken as:
When an electric current is passed, electrons move from:
