English

What is the Function of a Step-up Transformer?

Advertisements
Advertisements

Question

What is the function of a step-up transformer?

One Line Answer
Advertisements

Solution

Function of a step-up transformer is to increase the a.c. voltage and decrease the current.

shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Electricity and Magnetism - Exercise 4.1 i [Page 213]

APPEARS IN

Frank Physics Part 2 [English] Class 10 ICSE
Chapter 4 Electricity and Magnetism
Exercise 4.1 i | Q 49 | Page 213

RELATED QUESTIONS

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. 


If the lamps are both the same in the figure given below and if A1 reads 0.50 A, what do A2, A3, A4 and A5 read? 


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

(a) for decorating a hotel building from outside?


Consider the circuit given below when A, B and C are three identical light bulbs of constant resistance.   

(a) List the bulbs in order of increasing brightness.
(b) If C burns out, what will be the brightness of A now compared with before?
(c) If B burns out instead, what will be the brightness of A and C compared with before?


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)?


Find the potential difference required to pass a current of 0.2 A in a wire of resistance 20Ω


What do you mean by direct current?

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


1 kWh = `(1 "volt" xx 1 "ampere" xx "_________")/1000`


A battery of e.m.f. 15 V and internal resistance 2 Ω   is connected to two resistors of resistances 4 ohm and 6 ohm joined (a) in series. Find in each case the electrical energy spent per minute in 6 Ω resistor.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×