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State how are the two resistors joined with a battery when potential difference is same across each resistor. - Physics

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प्रश्न

State how are the two resistors joined with a battery when potential difference is same across each resistor.

एक शब्द/वाक्यांश उत्तर
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उत्तर

Parallel 

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पाठ 8: Current Electricity - EXERCISE - 8(B) [पृष्ठ २००]

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सेलिना Physics [English] Class 10 ICSE
पाठ 8 Current Electricity
EXERCISE - 8(B) | Q 10. (b) | पृष्ठ २००

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How many 176 Ω resistors (in parallel) are required to carry 5 A on a 220 V line?


Two resistors, with resistance 5 Ω and 10 Ω respectively are to be connected to a battery of emf 6 V so as to obtain:

(i) minimum current flowing
(ii) maximum current flowing
(a) How will you connect the resistances in each case?
(b) Calculate the strength of the total current in the circuit in the two cases.


A particular resistance wire has a resistance of 3 ohm per meter. Find the total resistance of three lengths of this wire each 1.5 m long, joined in parallel.


The circuit diagram Fig shows three resistors 2 Ω, 4 Ω and R Ω connected to a battery of e.m.f. 2 V and internal resistance 3 Ω. If main current of 0.25 A flows through the circuit, find:

  1. the p.d. across the 4 Ω resistor,
  2. the p.d. across the internal resistance of the cell,
  3. the p.d. across the R Ω or 2 Ω resistors
  4. the value of R.

A current of 2 A is passed through a coil of resistance 75 Ω for 2 minutes.
(a) How much heat energy is produced?
(b) How much charge is passed through the resistance?


The equivalent resistance of a parallel combination of two resistors of 30 Ω and 60 Ω is ______________.


A given wire is stretched to double its length. How will its resistance change?


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(i) the total resistance of the circuit
(ii) the value of R
(iii) the current flowing through R.


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