EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SAT>Chapter 26 - Electricity>SAT 2020>Q 3

EASY

NTSE Stage II

IMPORTANT

Earn 100

Consider three resistors of resistances $R_{1}, R_{2} a n d R_{3}$ such that $R_{1} < R_{2} < R_{3}$ . Two of them are connected in parallel, and then connected in series with the third. Which one of the following configurations yields the highest current when connected to the same battery?

50% studentsanswered this correctly

Important Questions on Electricity

EASY

NTSE Stage II

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SAT>Chapter 26 - Electricity>SAT 2020>Q 4

Figure shows three electrical appliances connected to a

220 V

ac mains. What is the amperage (current rating) of the fuse that should be used in the circuit?
Question Image

Question Image

EASY

NTSE Stage II

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SAT>Chapter 26 - Electricity>SAT 2021>Q 5

The cost of coal is

Rs 5 per kg

and can produce energy of

20 {MJkg}^{- 1}

. If a power station uses coal to produce electricity with

25 %

efficiency, then the cost of coal for producing

1

unit (

1 {kWh}^{- 1}

) of electricity in

Rs

.

MEDIUM

NTSE Stage II

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SAT>Chapter 26 - Electricity>SAT 2021>Q 6

A

10 V

battery is connected to a series combination of two resistances of

4000 Ω

and

6000 Ω

. A non-ideal voltmeter of resistance connected across

4000 Ω

reads

3.226 V .

What would be the value if the same voltmeter connected across

6000 Ω

?

EASY

NTSE Stage II

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SAT>Chapter 26 - Electricity>SAT 2021>Q 7

Consider two circuits:
(i) A: in which N identical bulbs are connected in series across a battery of emf E.
(ii) B: in which N bulbs identical to those in A are connected in parallel across similar battery of emf E.

P_{A}

: Power dissipating in each bulb in A.

P_{B}

: Power dissipating in each bulb in B.

P_{AT}

: Total power delivered by battery in circuit A.

P_{B T}

: Total power delivered by battery in circuit B.

EASY

NTSE Stage II

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SAT>Chapter 26 - Electricity>SAT 2021>Q 8

Seven resistances, each of value given R value are connected between two points A and B as shown in the figure.
Question Image

Question Image

The combined value of resistance between points A and B.