The emf of a cell is the potential difference across its terminals when it is in
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2025
If a positively charged rod is brought close to the cap in the diagram above, the divergence
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2025
At what distance from a 1.2 x 10\(^{-7}\)C point charge will the electric field intensity be equal to 4.8 x 10\(^{-4}\)NC\(^{-1}\) [ Take \(\frac{1}{4\pi ε_0}\) = 9.0 x 10\(^9\)]
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2025
From the above circuit, calculate the impedance ((\(\pi\) = \(\frac{22}{7}\), f = 50Hz)
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2025
A gas is cooled at a constant pressure from 57ºC was observed to shrink one-fifth (1\5) of its original volume of 2.00cm\(^3\). Find its new temperature
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2025
In electromagnetic induction, the generated electricity is actually a voltage called
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2025
A collection of condensed suspended dust particles in the air constitute
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2025
What magnitude of electric current can store 2.5 J of energy in a 3 H induction coil?
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2025
Which of the following is better for measuring a very small resistance?
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2025
One of the following is not a radiation detector
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2025
Which of the following electromagnetic spectra has the shortest wavelength?
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2025
The volume of a fixed mass of gas at 0º C is 200 m\(^3\). What is its volume at 273º C at constant pressure?
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2025
What pressure would a 5000N weight of water exert at the bottom of a reservoir containing it if its length and breadth are 10m and 5m, respectively
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2025
Water waves and light waves differ generally in their
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2025
A man moves 6.0m East and then 10.0m N30ºE. How far is he from his starting point?
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2025
What is the pressure exerted by 4.5m\(^3\) of gas at 17ºC in a cylinder if the number of moles is 8.3 moles? (R = 8.31 JK\(^{-1}\)mol\(^{-1}\))
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2025
If 10 objects, tinsels are placed between the mirror of a Kaleidoscope with an inclination of 30º, how many images are formed?
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2025
A circular parallel plate capacitor with radius 6cm is separated by 0.12cm. Calculate the capacitance of the capacitor [\(\pi\) = 3.142, ε\(_0\) = 8.85 x 10\(^{-12}\)Nm\(^2\)C\(^2\)]
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2025
Calculate the heat capacity of a material that absorbs 48KJ of heat at a differential temperature of 53ºC
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2025
When capacitors are connected in series across a potential difference, there is a loss in their stored energy because: