English

Give the electric current unit.

Advertisements
Advertisements

Questions

Give the electric current unit.

What is the SI unit of electric current.

Very Short Answer
Advertisements

Solution

The standard SI unit for current is the ampere with the symbol A.

shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Electric charge and Electric current - Exercise [Page 50]

APPEARS IN

Samacheer Kalvi Science [English] Class 9 TN Board
Chapter 4 Electric charge and Electric current
Exercise | Q VI. 4. ii. | Page 50
Lakhmir Singh Physics [English] Class 10
Chapter 4 Electricity
Exercise 2 | Q 26.1 ii.

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

One coulomb charge is equivalent to the charge contained in:

(a) 2.6 × 1019 electrons
(b) 6.2 × 1019 electrons
(c) 2.65 × 1018 electrons
(d) 6.25 × 1018 electrons


What is the conventional direction of the flow of electric current? How does it differ from the direction of flow electrons?


Which unit could be used to measure current?

(a) Watt
(b) Coulomb
(c) Volt
(d) Ampere


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. 


What happens to the other bulbs in a series circuit if one bulb blows off?


Which type of circuit, series or parallel, is preferred while connecting a large number of bulbs:  

(b) for lighting inside the rooms of the hotel?

 


Two lamps, one rated 40 W at 220 V and the other 60 W at 220 V, are connected in parallel to the electric supply at 220 V.  


(a) Draw a circuit diagram to show the connections.
(b) Calculate the current drawn from the electric supply.
(c) Calculate the total energy consumed by the two lamps together when they operate for one hour.


How does the heat H produced by a current passing through a fixed resistance wire depend on magnitude of current I?


What are the conditions under which charges can move in a conductor?

Calculate the amount of energy transferred by a 10 A electric current flowing through a resistor of 5 o for 15 minutes.


Where is the main fuse in a house circuit connected?

What will be the current drawn by an electric bulb of 40 W when it is connected to a source of 220 V?

What do you mean by watt-hour?

Two resistors P and Q of the same material and length but of different thickness are connected in parallel to a battery. The cross- sectional area of P is twice that of Q. What is the ratio of
(a) The resistance of P to the resistance of Q?
(b) The current in P to the current in Q?


Find the effective resistance in the following circuit diagrams (Fig.):


What is the criteria for selecting a fuse wire?


If a fuse contains a 5 A fuse wire and the voltage is 240 V, what is the maximum power (wattage) which may be taken from the circuit?


An electric iron is rated 750 W, 230 V. Calculate the electrical energy consumed by the press in 16 hours.


State the condition when it is advantageous to connect cells in parallel.


Find the odd one out.

Loudspeaker, Bar magnet/magnet, Electric motor, Microphone.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×