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In current electricity, Ohm.s law is obeyed by all :

Compute the value of battery current in shown in figure. All resistance are in ohm.

The diode used in the circuit shown in the figure has a constant voltage drop of 0.5 V at all currents and a maximum power rating fo 100 milliwatts. What should be the value of the resistor R , connected in series with the diode for obtaining maximum current?

Figure shows sections of a long current carrying wires. At origin the current is devided in two equal parts. All section lies in xy plane. If the net magnetic field at P is (mu_(0)lx)/(8pi) (sqrt2 + 1)^(2) , then find out the value of x.

Currently availability of CO_2 levels in atmosphere is limiting to all except