हिंदी

Which of the Following Changes Would Enable a Millimeter to Be Used as a Direct Current Ammeter Reading Upto 1 A?

Advertisements
Advertisements

प्रश्न

Tick (✓) the correct choice among the following :

Which of the following changes would enable a millimeter to be used as a
direct current ammeter reading upto 1 A?

विकल्प

  •  connecting a large resistor in series

  •  connecting a large resistor in parallel

  •  connecting a small resistor in series

  •  connecting a small resistor in parallel

MCQ
Advertisements

उत्तर

 connecting a large resistor in series

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 4: Electricity and Magnetism - Exercise 6 [पृष्ठ २१४]

APPEARS IN

फ्रैंक Physics Part 2 [English] Class 10 ICSE
अध्याय 4 Electricity and Magnetism
Exercise 6 | Q 2.3 | पृष्ठ २१४

संबंधित प्रश्न

Name the unit which a consumer pays as the cost of electricity.

The diagram shows two ways of connecting three lamps P, Q and R to A.C. supply of 220 V.

Name the two arrangements. Which of them would you prefer in a household circuit? Give a reason for your answer.

Tick(✓) the correct choice in the following:

A three pin plug is connected to the lead for a 1 kW electric iron to be
used on a 250 V supply. Which of the following statements is not correct?


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?


A 3 pin mains plug is fitted to the lead for a 1 kW electric kettle to be used on a 250 V A.C. supply. Which of the following statements is NOT correct?
(a) A 13 A fuse is the most appropriate value to use.
(b) The brown wire should be connected to the live side of the mains.


Transformers are usually designed so that their efficiency is as close to 100% as possible. Describe two features in transformer design which help to achieve high efficiency?

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


A current of 0.2 A flows through a wire whose ends are at a potential difference of 15 V. Calculate:

(i) The resistance of the wire, and

(ii) The heat energy produced in 1 minute.


An electric bulb is rated 250 W, 230 V. 

  1. the energy consumed in one hour, and
  2. the time in which the bulb will consume 1.0 kWh energy when connected to 230 V mains.

What are the effects of electric current?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×