The point B in the circuit is earthed what will be the potential at point D?
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Total resistance of current `= 3 + 10 + 15+ 20= 50Omega` main current in circuit `= (50)/(50) = 1 amp` resistance between `B` and `D = 10 + 12 + 15 = 25 Omega`potential difference across `B` and `D = 25 xx 1 = 25V` Here `B` is at highet potential `D` becomes is flowing from `B` to `D`when `B`is earthed potential of `b`zero therfore potential of`D` is `-25V`
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