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प्रश्न
State expression for Resistance connected in parallel.
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उत्तर
`1/"R" = 1/"r"_1 + 1/"r"_2 + 1/"r"_3` resistances in parallel.
संबंधित प्रश्न
An electrical appliance has a resistance of 25 Ω. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be:
(a) 0.92 A
(b) 2.9 A
(c) 9.2 A
(d) 92 A
If two resistors of 25 Ω and 15 Ω are joined together in series and then placed in parallel with a 40 Ω resistor, the effective resistance of the combination is :
(a) 0.1 Ω
(b) 10 Ω
(c) 20 Ω
(d)40 Ω
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(a) the resistance of the appliance and
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