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प्रश्न
In the circuit shown below in Fig, calculate the value of x if the equivalent resistance between A and B is 4 Ω.
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उत्तर
r1 = 4 Ω
r2 = 8 Ω
r3 = x Ω
r4 = 5 Ω
Rs1 = r1+r2
= 4 + 8
= 12 Ω
Rs2 = r3 + r4
= x + 5 Ω
`1/"R" =1/"Rs"_1 + 1/"Rs"_2`
`1/4 = 1/12 + 1/(5+x)`
`1/6=1/(5+x)`
x = 1 Ω
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संबंधित प्रश्न
The relationship between the potential difference and the current in a conductor is stated in the form of a law.
1) Name the law.
2) What does the slope of V-I graph for a conductor represent?
3) Name the material used for making the connecting wire.
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Potential difference V (in volt) |
0.5 | 1.0 | 1.5 | 2.0 | 2.5 |
| current I (in ampere) | 0.2 | 0.4 | 0.6 | 0.8 | 1.0 |
Draw a V-I graph and use this graph to find:
- the potential difference V when the current I is 0.5 A,
- the current I when the potential difference V is 0.75 V,
- the resistance in a circuit.
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| Current (I) | 2 A | 3 A | 4 A |
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- Justify your answer.
- State Ohm's law.
