1. How much is the current in the circuit if a 60-volt source is connected to a resistance of t, 600 ohms? 2. How much is the voltage in a circuit having а current equal to 25 amp, if a 25-ohm resistance is connected to it? 3. А 70.35-ohm resistance is connected to the circuit. How much is the voltage if the current is equal to 4.5 amp?