Advertisements
Advertisements
प्रश्न
Which unit could be used to measure current?
(a) Watt
(b) Coulomb
(c) Volt
(d) Ampere
Advertisements
उत्तर
Ampere
It is the SI unit of electric current.
APPEARS IN
संबंधित प्रश्न
Draw the electrical symbols of the following components and state its use
Wire crossing
A Radio Set Draws a Current of 0.36 a for 15 Minutes. Calculate the Amount of Electric Charge that Flows Through the Circuit.
A student made an electric circuit shown here to measure the current through two lamps.
Are the lamps in series or parallel?
(a) Are the lamps in series or parallel?
(b) The student has made a mistake in this circuit. What is the mistake?
(c) Draw a circuit diagram to show the correct way to connect the circuit. Use the proper circuit symbols in your diagram.

A battery of 9 V is connected in series with resistors of 0.2 Ω, 0.3 Ω, 0.4 Ω, 0.5 Ω and 0.12 Ω. How much current would flow through the 12 Ω resistor?
You can given one hundred 1 Ω resistors. What is the smallest and largest resistance you can make in a circuit using these?
Draw a circuit diagram to show how two 4 V electric lamps can be lit brightly from two 2 V cells.
For a heater rated at 4 kW and 220 V, calculate:
(a) the current,
(b) the resistance of the heater,
(c) the energy consumed in 2 hours, and
(d) the cost if 1 kWh is priced at Rs 4.60.
Tell the odd one out. Give a proper explanation.
Define the following:
Semiconductors
1 kWh = `(1 "volt" xx 1 "ampere" xx "_________")/1000`
Explain, why the potential difference across the terminals of a cell is more when the cell is not in use than it is when the cell is being used.
The power of an electric device is a product of ______ and ______.
The SI unit for electric current is the coulomb.
Match the items in column-I to the items in column-II:
| Column - I | Column - II | ||
| (i) | electric current | (a) | volt |
| (ii) | potential difference | (b) | ohm meter |
| (iii) | specific resistance | (c) | watt |
| (iv) | electrical power | (d) | joule |
| (v) | electrical energy | (e) | ampere |
The number of electrons constituting a 1-coulomb charge is ______.
