here,
the power of battery , P = 4 mW = 0.004 W
the voltage of battery , V = 7 V
the current in the circuit , I = P /V
I = 0.004 /7 A = 0.57 * 10^-3 A
I = 0.57 mA
TUN A battery is rated that it provides 4.0mW of power at 7.0V when tully chargeu....
1. Using the power-sizing model and given: Battery A: rated at 15 Watt Hours for $100.00. Power sizing exponent: 0.4 Find the cost of battery B rated at 50 Watt Hours A. $1.618 B. $161.86 C. $0.618 D. $61.86 1. Using the power-sizing model and given: Battery A: rated at 15 Watt Hours for $100.00. Power sizing exponent: 0.4 Find the cost of battery B rated at 50 Watt Hours A. $1.618 B. $161.86 C. $0.618 D. $61.86
Laptop batteries are rated in W⋅h, the product of the power (in W) that the battery can provide and the time (in h) that it can provide this power. For instance, a 50 W⋅h battery can provide 50 W for 1.0 h, 25 W for 2.0 h, and so on. A 10.8 V laptop battery is rated at 76 W⋅h. What is the total charge the battery can provide to the laptop before the battery is depleted?
A 5 V battery is rated at 1,709 mAh. What is the battery's lifetime (in hours) if the output current is kept constant at 64 mA? An electric car has electric motors that dissipate a maximum 19 kW of power. When the car's battery can store 44 kWh of energy, what is the shortest time (in minutes) that a fully-charged battery will completely discharge?
Question 29 (1 point) An electric power tool operates from a 12 V battery rated at 1.6x10^2 ampere- hours. How much energy does this battery store? 69 MJ 0.69 MJ none of these 0.069 MJ 6.9 MJ
power electronics and divices In one application, a 12V battery is to be used to power up six power LEDs connected as shown in Figure 3. The LED parameter is given Table 1. Using the rated parameters as the basis calculation, design a suitable DC-DC converter for this application whereby the inductor current variation must not exceed 50% of the output current whereas the output voltage ripple must be less than 5%. The system uses 200 kHz switching frequency Vo...
A half-wave rectifier is charging a battery, which has 12 V as its rated voltage. The battery is 85 % charged at the initial charging time. At the end of the charging period, the battery voltage is 115 % of the rated voltage. Calculate the resistance value to limit the charging current to a maximum of 10 A as the worst case. Get the power dissipated by the resistor under these conditions. Get the average current at the beginning and...
Question 30 1 pts A battery is rated at 12 V and 160 A-h. How much energy can this battery convert over its lifetime? O 1.9 kJ 6.0 kJ O 6.9 MJ O 1.9 M)
7. A transformer is rated at 75kVA, with a primary voltage of 32kV. When tested under "Full Load" condition, its copper loss is 870W and core loss is 320W. If an industrial load rated at 1500V with a pf = 0.76 is connected to the secondary, determine: a) The transformation ratio. b) Total power loss at "one-third load". c) Efficiency of the transformer at "one-third load". d) Primary and secondary currents at "one-third load".
1. A battery with a capacity of 2500 mAh (milliamp-hours) is used to power a device that constantly draws 400 mA of current. Assuming that the battery is ideal, how long will the battery last? The same battery as above is now used to power a clock that only draws current when the second hand "ticks". The current draw during this movement is 2mA. A clock ticks every second but note that the second hand doesn't take a second to...
Suppose your waffle iron is rated at 1.90 kW when connected to a 3.60 x 102 V source (a) What current does the waffle iron carry? (b) What is its resistance? Need Help? 8. -12 points SerCP11 17.P.044 Batteries are rated in terms of ampere-hours (A . h).For example, a battery that can deliver a current of 3.0 A for 5.0 h is rated at 15 A h (a) What is the total energy, in kilowatt-hours, stored in a 9-V...