Distilled water usually does not light a tester bulb because it has very few A Wire electrons B Heat particles
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Chapter 25: Chemical Effects of Electric Current (Set-1)
When you dip two electrodes in distilled water and connect a simple tester, the bulb usually does not glow because
Continue readingChapter 24: Magnetism and Electromagnetism (Set-5)
A compass near a current-carrying wire deflects most when the wire is placed A Along needle direction B Far below
Continue readingChapter 24: Magnetism and Electromagnetism (Set-4)
A steel rod becomes magnetized faster when stroked A In random directions B With both ends C In one direction
Continue readingChapter 24: Magnetism and Electromagnetism (Set-3)
Which statement about lodestone is correct? A Man-made steel magnet B Plastic with charge C Natural magnet found D Heated
Continue readingChapter 24: Magnetism and Electromagnetism (Set-2)
Which objects are attracted strongly by a magnet? A Paper and cloth B Iron and steel C Wood and glass
Continue readingChapter 24: Magnetism and Electromagnetism (Set-1)
Which natural mineral acts as a magnet? A Lodestone B Quartz crystal C Rock salt D Limestone Explanation Lodestone is
Continue readingChapter 23: Electricity – Circuits, Current and Effects (Set-5)
A bulb rated for a certain voltage is connected to a much higher voltage source; the first effect noticed is
Continue readingChapter 23: Electricity – Circuits, Current and Effects (Set-4)
In a series circuit with two identical bulbs, the main reason both bulbs glow dimmer is A Voltage becomes zero
Continue readingChapter 23: Electricity – Circuits, Current and Effects (Set-3)
In a circuit, conventional current direction is taken from A Negative to positive B Both directions C Positive to negative
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