Color of the four strips of carbon resistor are respectively orange, green, golden, silver. Then its resistance is :
How will you connect three resistors of 3 Ohm, 4 Ohm and 7 Ohm respectively so as to obtain a resultant resistance of 3.5 Ohm?
Two terminals of a cell of emf 2.5 V are connected to the two ends of the 10 ohm resistance coil. If the current in the circuit is 0.2 A, then the internal resistance of the cell is