A conduction tester is made by a bulb. But it does not detect weak currents How can we make another tester which can detect weak current? I will mark as brainliest sure

Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented.b)scientists had not completely finalized their results, which took 30 years.c)cigarettes were cheaply available and media channels were very inefficient.d)cigarette manufacturers were trying hard to bring an alternative into the market

Explain why electric current cannot exist if a current doesn't have a voltage source.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2