5 A battery of e.m.f. 6V produces a steady current of 2.4 A for 10 minutes....
4 a A lamp of resistance 15.12 is connected to a battery of e.m.f. 4.5V. Calculate the current through the lamp. b Calculate the resistance of the filament of an electric fire which takes a current of 6.5 A when it is connected across a mains supply of 230 V. c Calculate the voltage which is required to drive a current of 2.4 A through a wire of resistance 3.5 12.
1)A battery having an e.m.f. of 105 V and an internal resistance of 1 Ω is connected in parallel with a d.c. generator of e.m.f. 110 V and internal resistance of 0.5 Ω to supply a load having a resistance of 8 Ω. Calculate: (a) the currents in the battery, the generator and the load; (b) the potential difference across the load. 1)b.Two batteries are connected in parallel. The e.m.f. and internal resistance of one battery are 120 V and...
A resistor of 10 ohms connected to a 6v battery consumes a current for 7.5min. Calculate the amount of electrical charge that passes through the resistor. 10. Un resistor de 10.0 Ω conectado a una batería de 6.0 V consume una corriente durante 7.5 minutos. Calcule la cantidad de carga eléctrica que pasa por el resistor. Ans: 270 C
5. How much charge is transported by a steady current of 350mA in 8500 seconds? How many seconds does it take to transport 45C of charge at the rate of 15mA? How many joules of energy are used by a 60W light in 2.5 hour? How much energy does a 12-volt battery supply to a load which takes 100A for 6. 8. 15 seconds? 9. How many seconds are required to supply 20MJ of energy from a 12 V battery...
a 10 V battery connected to a resistor produces a 5 mA (milliamperes)current. what is the resistance?
e.m.f=45v, R1=5ohm, R2=7.5ohm, R3=6 ohm, R4=10 ohm, and R5=15 ohm 7. Same circuit as Problem 4, except with two more ideal batteries of e-15V and e-25V (see below). (a) Calculate the current along each branch of the circuit. (b) Calculate the power in each battery. (c) Is any one of the batteries being charged? Rs R4
5. The common lead-acid car battery produces a large burst of current, even at low temperatures, and is rechargeable. The reaction that occurs while recharging a "dead" battery is 2PbSO4(s)+2H20)Pb(s) + PbO(s) + 2H2SO40) Use AHoe values from the textbook to calculate AHon rxn
A 9.5 V battery supplies a 3.5 mA current to a circuit for 7.0 h . Part A: How much charge has been transferred from the negative to the positive terminal? Part B: How much electric potential energy has been gained by the charges that passed through the battery?
Homework 1 A rechargeable flashlight battery is capable of delivering 105 mA for about 15 h. How much charge can it release at that rate? If its terminals voltage is 1.1 V, how much energy can the battery deliver? I. 2. The current entering the positive terminal of a device is )- A and the voltage across the device is v)-5dildr V (a) Find the charge delivered to the device between t-0 and (b) Calculate the power absorbed. (c) Determine...
A motor is connected to a 12-V battery and draws a 2.0 A current. a) How much power is delivered to the motor? b) How much energy is converted if the motor runs for 5 minutes?