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Current Electricity)
Q1. The storage battery of a car has an emf of 12 V. If the internal resistance of the batteryis 0.4Ω, what is the maximum current that can be drawn from the battery?
Q2. Three resistors 1 Ω, 2 Ω, and 3 Ω are combined in series. What is the totalresistance of the combination?
Q3. Three resistors 2 Ω, 4 Ω and 5 Ω are combined in parallel. What is the totalresistance of the combination?
Q4. Three resistors 2 Ω, 4 Ω and 5 Ω are combined in parallel. If the combination is connected to a battery of emf 20 V and negligible internalresistance, determine the current through each resistor, and the total current drawn fromthe battery.
A particular heat engine has a useful power output of 5.80 kW and an efficiency of 21.0%. In each cycle, the engine expels 8450 J of exhaust energy.
Two forces act on a 10 kg box. One is directed to the right with a magnitude of 10 N. What is the velocity of the box after moving 5 meters
A high-speed flywheel in a motor is spinning at 450 when a power failure suddenly occurs. The flywheel has mass 38.0 and diameter 78 . The power is off for 25 and during this time the flywheel slows due to friction in its axle bearings.
As the block slides through its equilibrium position, a wad of putty of mass mp = 0.150 kg is dropped vertically and sticks to the block. Determine the new period (in s) of the motion.
If you wanted to produce a sinusoidal 20V peak-to-peak signal in a 10 cm diameter pick up coil with a 100 turns sitting in a 1.2 T uniform magnetic field, at what angular velocity would you have to spin the coil?
A satellite is in a circular orbit around the earth. The period of the satellite is 22 hr.
A two-slit Fraunhofer interference-diffraction pattern isobserved with light of wavelength 570 nm. what is the separation between the slits
A wedding ring is tossed into the air and given a spin, resulting in an angular velocity of 19.3 rotations per second, what is the diameter of the ring
Work of 1500 J is done on an ideal gas, but the internal energy increases by only 800 J. What is the amount and direction of heat flow into or out of the system
The concept of thermionic emission is the basis of modern X-ray tubes, which are the workhorse of a medical X-ray image. In this process a filament (a piece of metal in a vacuum) is heated by the application of electrical current
given heat 1000 j is input to a carnot engine at 300 degrees celsius and waste heat rejected at 10 degrees C. find the thermal efficiency of the engine and the work performed
As a positron moves through a region of space, its speed increases from 2.80 X10^6 m/s to 8.00 X10^6 m/s. The electric force is the only force acting on the positron. Across what potential difference did the positron travel?
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