-TAK RCM M- M+ 8 9 CA 4 5 6 1 2 3 + Figure 20.40 The strip of solar cells just above the keys of this calculator convert light to electricity to supply its energy needs. (credit: Evan-Amos, Wikimedia Commons)

Q: What is the electrical energy stored per 1 squared micron of cell membrane at the voltage -70 mV?

A: Area of cell membrane=A=1 micron2=1×10-62 m voltage=V=-70 mV=-70×10-3V

Q: Three capacitors each of capacitance 9 pF are connected in series.(a) What is the total capacitance…

A: Given,

Q: A 12 pF capacitor is connected across a 54 V source. What charge is stored on it? Answer in units of…

A: The charge stored on the capacitor is given by Q = CoVo Where Co = Capacitance of the capacitor, Vo…

Q: A voltmeter indicates that the potential at a location between two parallel conducting plates is 7.7…

A:

Q: A rechargeable battery is labeled for 12 V and 1600 mAh*. How much charge can the battery supply at…

A:

Q: A 12µF, a 9.0µF and a 7.0µF capacitor are connected in series to a 15 V battery. Draw the circuit…

A: C1 = 12 µF, C2 = 9 µF, C3 = 7 µF, Voltage , V = 15 V To find = Charge on each capacitor

Q: What capacitance is needed to store 3.46 µC of charge at a voltage of 114 V?

A: GivenCharge on capacitor= 3.46 µC  voltage across plates =  114 V. We have to calculate the…

Q: To recharge a 10 V battery, a battery charger must move 3.6 ✕ 105 C of charge from the negative…

A: Here,  Voltage  V= 10 V Charge = 3.6 ×105 Now , Work done = QV = 10×3.6×105 = 3.6×106 J

Q: What capacitance is needed to store 6.90 µC of charge at a voltage of 110 V?

A:

Q: What is the energy stored in the 11.1 µF capacitor of a heart defibrillator charged to 9.50×103 v?…

A: The energy of a capacitor is given by,             E = 12×CV2 And the charge stored in a capacitor…

Q: To recharge a 12 V battery, a battery charger must move 3.2 ✕ 105 C of charge from the negative…

A: Potential difference V = 12 V Charge q = 3.2×105 C

Q: (a) Find the charge on the capacitor in coulombs. 3.30-5 (b) What voltage battery would be required…

A: Given value--- capacitance = 5.75 micro C.  V = 5.75 V. We have to find--- (a) Find the charge on…

Q: A 22.0 V battery moves 7.6 KC of charge. How much energy does the battery deliver? A 2.9 x 10-³ J B…

A:

Q: A 0.0018 C amount of charge is produced on a Van der Graaf with 1,435 J of energy. A spark of this…

A: Voltage = Energy/Charge. resistance = Voltage/current Current = Charge /time

Q: Each of the uncharged capacitors in the figure has a capacitance of 35.8 µF. A potential difference…

A: Capacitance = 35.8 µFCapacitor is connected in parallel.potential difference= 4200VTo find: charges…

Q: ne 9-volt battery contains 19.7 thousand joules of energy.  A 4-pack of 9-volt batteries cost $10.31…

A: The energy in one battery E =19.7×103 J Total energy of 4 pack 9V battery is 4E The power is 1 Watt…

Q: When a battery is connected to a capacitor (device that stores charge) the charge q builds up - t -…

A:

Q: A 10 V battery is connected to a series of n capacitors, each of capacitance 2.0 mF. If the total…

A:

Q: An iPhone battery stores 6.55 Wh of energy. How many iPhones could be charged in one day by a small…

A: Energy recieved by solar panel = total energy × area

Q: An electric field does 15 J of work on a 0.0007 C charge. What is the magnitude of the voltage…

A: Given data:  Work (W) = 15 J Charge (q) = 0.0007 C Required: The magnitude of the voltage change…

Q: To recharge a 12.0 V battery, a battery charger must move 4.24x105 C of charge from the negative…

A: Given:potential difference, V= 12.0 Vamount of charge transferred, Q = 4.24×105 CAsked:To find work…

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.